This way agents who needs to stay at home have more to play.
From map view you can view and select portals within 400 meters.
I would say like 60-100m at best. Maybe even a increase in xmp range.
But anything beyond that is gamekiller.
It should be at least 224.8m.
well 400m would be a bit overkill, but maybe 100 or 200m ??
How about 40m or to your nearest portal, whichever is the larger?
Having a temporary portal, would be the best idea.